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Finding the Fourth Proportional to 131,093.78, 180,910.68 and 74,505.56

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Solution

The fourth proportional to 131,093.78, 180,910.68 and 74,505.56 is: 102,818.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,093.78 : 180,910.68 = 74,505.56 : x
  2. Step 2: Convert to fraction form
    131,093.78/180,910.68 = 74,505.56/x
  3. Step 3: Cross multiply
    131,093.78x = 180,910.68 × 74,505.56
  4. Step 4: Simplify right side
    131,093.78x = 13,478,851,523.38
  5. Step 5: Solve for x
    x = 13,478,851,523.38/131,093.78
  6. Step 6: Final answer
    x = 102,818.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.